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Aldehydes, Ketones and Carboxylic Acids

Section: Chemistry

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Question : 7 of 71

Marks: +1, -0

Complete reaction of acetaldehyde with excess formaldehyde, upon heating with conc. NaOH solution, gives P and Q . Compound P does not give Tollens' test, whereas Q on acidification gives positive Tollens' test. Treatment of P with excesscyclohexanone in the presence of catalytic amount of p -toluenesulfonic acid (PTSA) gives product R .
Sum of the number of methylene groups (−CH2−) and oxygen atoms in R is _______.

[JEE Adv 2024 P1]

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